Conan: The Hour of the Dragon (Original Version) #18

In the novel “The Hour of the Dragon” (a.k.a. Conan the Conqueror), King Conan and the Aquilonian Army are defeated by the heir of the previous King and a wizard of great power. Conan has only the help of a slave girl to find the Heart of Ahriman, which is the only thing that will defeat the wizard and allow Conan to regain his throne.
This is a novel originally released in the pulp magazine Weird Tales from 1935 to 1936.
NOTE: Ryetown Classics has chosen to present the Conan Series in chronological order, not in the order they were originally released.